Fastmember access to non-public properties

I wanted to replace the reflection index helper module with FastMember ( https://www.nuget.org/packages/FastMember/ ) but came across the following problem.

I have the following setup:

class Program
{
    static void Main(string[] args)
    {
        var d = new DerivedClass
        {
            Name = "Derived Name Property",
            BaseName = "Base Name Property",
            BaseInternalName = "Base Internal Name Property",
        };

        Console.WriteLine(d["Name"]);
        Console.WriteLine(d["BaseName"]);
        Console.WriteLine(d["BaseInternalName"]);
        Console.ReadLine();
    }
}

public abstract class BaseClass
{
    public object this[string propertyName]
    {
        get
        {
            var x = GetTypeAccessor();
            return x[this, propertyName];
        }
        set
        {
            var x = GetTypeAccessor();
            x[this, propertyName] = value;
        }
    }

    protected abstract TypeAccessor GetTypeAccessor();

    public string BaseName { get; set; }
    internal string BaseInternalName { get; set; }
}
public class DerivedClass : BaseClass
{
    public string Name { get; set; }

    private TypeAccessor _typeAccessor;

    protected override TypeAccessor GetTypeAccessor()
    {
        if (_typeAccessor == null)
            _typeAccessor = TypeAccessor.Create(this.GetType(), true);

        return _typeAccessor;
    }
}

      

        
        
        
      

    

With this, I get the following exception: in the line Console.WriteLine(d["BaseInternalName"]);

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in FastMember_dynamic

Innerexception is null.

According to nuget https://www.nuget.org/packages/FastMember/ there should be support for accessing non-public properties since version 1.0.0.8:

• 1.0.0.8 - provide support for non-public accessories (at least I think that's the point)

Another thing I noticed is that nuget says 1.0.0.11 is the newest version, but the DLL I download to my machine on Install-Package FastMember

is version 1.0.0.9, probably marc https://stackoverflow.com / users / 23354 / marc-gravell sees this and can fix it. :)